Prerequisites
- Carth the Lion on the battlefield
- Karn, the Great Creator on the battlefield
- Ugin's Nexus on the battlefield
- Oath of Teferi on the battlefield
- Ashnod's Altar on the battlefield
- each extra turn available
Steps
- Activate Karn's first loyalty ability by putting two loyalty counters on it, causing Ugin's Nexus to become an artifact creature until end of turn
- Activate Ashnod's Altar by exiling Ugin's Nexus, adding
- Ugin's Nexus triggers, causing you to take an extra turn after this one
- Activate Karn's second loyalty ability by removing a loyalty counter from it, returning Ugin's Nexus from exile to your hand
- Move to your next turn
- Cast Ugin's Nexus by paying
- Repeat
Results
Required Cards 5
Carth the Lion
Legendary Creature — Human Warrior
Karn, the Great Creator
Legendary Planeswalker — Karn
Ugin's Nexus
Legendary Artifact
Oath of Teferi
Legendary Enchantment